Baron Rendlesham, of Rendlesham, is a title in the Peerage of Ireland

Peerage of Ireland

The Peerage of Ireland is the term used for those titles of nobility created by the English and later British monarchs of Ireland in their capacity as Lord or King of Ireland. The creation of such titles came to an end in the 19th century. The ranks of the Irish peerage are Duke, Marquess, Earl,...

. It was created in 1806 for the businessman Peter Thellusson

Peter Thellusson, 1st Baron Rendlesham

Peter Isaac Thellusson, 1st Baron Rendlesham was a British merchant and politician.Thelluson was the eldest son of Peter Thellusson, a wealthy London merchant who had emigrated to Britain from France in 1760, and his wife Ann, daughter of Matthew Woodford...

, who also represented Midhurst

Midhurst (UK Parliament constituency)

Midhurst was a parliamentary borough in Sussex, which elected two Members of Parliament to the House of Commons from 1311 until 1832, and then one member from 1832 until 1885, when the constituency was abolished...

, Malmesbury

Malmesbury (UK Parliament constituency)

Malmesbury was a parliamentary borough in Wiltshire, which elected two Members of Parliament to the House of Commons from 1275 until 1832, and then one member from 1832 until 1885, when the borough was abolished.- MPs 1275–1508 :...

 and Bossiney

Bossiney (UK Parliament constituency)

Bossiney was a parliamentary constituency in Cornwall, one of a number of Cornish rotten boroughs, and returned two Members of Parliament to the British House of Commons from 1552 until 1832, when it was abolished by the Great Reform Act.-History:...

 in Parliament. The Thellusson family were of French Protestant origin, but settled in Geneva

Geneva

Geneva In the national languages of Switzerland the city is known as Genf , Ginevra and Genevra is the second-most-populous city in Switzerland and is the most populous city of Romandie, the French-speaking part of Switzerland...

, Switzerland

Switzerland

Switzerland name of one of the Swiss cantons. ; ; ; or ), in its full name the Swiss Confederation , is a federal republic consisting of 26 cantons, with Bern as the seat of the federal authorities. The country is situated in Western Europe,Or Central Europe depending on the definition....

, after the St. Bartholomew's Day massacre

St. Bartholomew's Day massacre

The St. Bartholomew's Day massacre in 1572 was a targeted group of assassinations, followed by a wave of Roman Catholic mob violence, both directed against the Huguenots , during the French Wars of Religion...

 of 1572. A later member of the family, Peter Thellusson

Peter Thellusson

Peter [de] Thellusson was a French-Swiss businessman and banker who settled in London.Thellusson was a member of a Huguenot family which had fled France for Geneva in the 16th century. His father Isaac had started a Swiss bank and became the Genevan ambassador to Paris...

, emigrated to Britain

Kingdom of Great Britain

The former Kingdom of Great Britain, sometimes described as the 'United Kingdom of Great Britain', That the Two Kingdoms of Scotland and England, shall upon the 1st May next ensuing the date hereof, and forever after, be United into One Kingdom by the Name of GREAT BRITAIN. was a sovereign...

 in 1762 where he established a successful London business. From the wealth acquired, he purchased several estates around the country, notably Brodsworth Hall

Brodsworth Hall

Brodsworth Hall, near Brodsworth, five miles north-west of Doncaster in South Yorkshire is one of the most complete surviving examples of a Victorian country house in England, and is virtually unchanged since the 1860s...

 in Yorkshire

Yorkshire

Yorkshire is a historic county of northern England and the largest in the United Kingdom. Because of its great size in comparison to other English counties, functions have been increasingly undertaken over time by its subdivisions, which have also been subject to periodic reform...

. After his death his estate was embroiled in the Thellusson Will Case

Thellusson Will Case

The Thellusson Will Case is an English trusts law case. It was a law suit resulting from the will of Peter Thellusson, an English merchant ....

. His eldest son was the aforementioned Peter Isaac Thellusson, 1st Baron Rendlesham, who took over the family business. Lord Rendlesham's younger son, the fourth Baron (who succeeded his twin brother), sat as a Member of Parliament

Member of Parliament

A Member of Parliament is a representative of the voters to a :parliament. In many countries with bicameral parliaments, the term applies specifically to members of the lower house, as upper houses often have a different title, such as senate, and thus also have different titles for its members,...

 for Suffolk East. His only son, the fifth Baron, also represented this constituency (as a Conservative

Conservative Party (UK)

The Conservative Party, formally the Conservative and Unionist Party, is a centre-right political party in the United Kingdom that adheres to the philosophies of conservatism and British unionism. It is the largest political party in the UK, and is currently the largest single party in the House...

). the title is held by the latter's great-grandson, the ninth Baron, who succeeded his father in 1999.

Barons Rendlesham (1806)

• Peter Isaac Thellusson, 1st Baron Rendlesham
  Peter Thellusson, 1st Baron Rendlesham
  Peter Isaac Thellusson, 1st Baron Rendlesham was a British merchant and politician.Thelluson was the eldest son of Peter Thellusson, a wealthy London merchant who had emigrated to Britain from France in 1760, and his wife Ann, daughter of Matthew Woodford...
  
   (1761–1808)
• John Thellusson, 2nd Baron Rendlesham (1785–1832)
• William Thellusson, 3rd Baron Rendlesham (1798–1839)
• Frederick Thellusson, 4th Baron Rendlesham
  Frederick Thellusson, 4th Baron Rendlesham
  Frederick Thellusson, 4th Baron Rendlesham , was a British Conservative Party politician.-Background:Rendlesham was a younger son of Peter Thellusson, 1st Baron Rendlesham, and Elizabeth Eleanor, daughter of John Cornwall....
  
   (1798–1852)
• Frederick William Brook Thellusson, 5th Baron Rendlesham
  Frederick Thellusson, 5th Baron Rendlesham
  Frederick William Brook Thellusson, 5th Baron Rendlesham , was a British Conservative politician.Rendlesham was the son of Frederick Thellusson, 4th Baron Rendlesham, and his wife Elizabeth Charlotte, daughter of Sir George Prescott, 2nd Baronet, and former wife of General Sir James Duff. His...
  
   (1840–1911)
• Frederick Archibald Charles Thellusson, 6th Baron Rendlesham (1868–1938)
• Percy Edward Thellusson, 7th Baron Rendlesham (1874–1943)
• Charles Anthony Hugh Thellusson, 8th Baron Rendlesham (1915–1999)
• Charles William Brooke Thellusson, 9th Baron Rendlesham (b. 1954)

The heir presumptive

Heir Presumptive

An heir presumptive or heiress presumptive is the person provisionally scheduled to inherit a throne, peerage, or other hereditary honour, but whose position can be displaced by the birth of an heir or heiress apparent or of a new heir presumptive with a better claim to the position in question...

is the present holder's uncle the Hon. Peter Robert Thellusson (b. 1920)